Increasing the spoket gear Ratio on a Bicycle increase the speed and Increasing The spoket gear ratio On a motorcycle Decrease the speed am I right??
Increasing the spoket gear Ratio on a Bicycle increase the speed and Increasing The spoket gear ratio On a motorcycle Decrease the speed am I right??
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There is no functional difference between the sprocket ratios when it comes to a motorbike and a bicycle. The bigger the sprocket at the front (the side that provides power) and the smaller one at the back -> The more torque you need to accelerate and the faster you can go at the top end, and vice versa.
That’s not correct. It works the same on both a bicycle and motorcycle.
Changing the gear ratio trades top speed for acceleration in both directions. You can’t gain both acceleration and top speed with only a gear change.
The question is worded abit strange so let’s set some constants. The front sprocket (attached to crank or motor) and rear gear (attached to the rear wheel) are the two main gears were looking at it.
Finding thier ratio is called a “velocity ratio” or VR. This ratio tells you how much increase of force or torque you get. So a VR of 2 means you get 2x the output force. However, this comes at the cost of distance traveled, or RPM with gears.
So high VR means loss of speed, but increase in torque (which is helpful for climbing hills).
Low VR means increase of speed, but loss of torque (good for driving fast speeds)
To find the VR of a gear system in a motor bike is the same as a push bike. However push bikes typically have large front sprockets and small rear sprockets meaning you lose output force, but can ride at a speed faster than you can pedal. So when you do one full pedal cycle, the wheel might rotate 4 times.
Motorbikes are the opposite, small front sprocket, large rear sprocket meaning you get more force output but less speed. So even though the motor might rotate 10 times, the rear wheel might only rotate once.
Let me know if you want to know more about the math behind it. It’s very simple to calculate.